Vehicle dump body



Dec. 9*, 1930,. R. T. osMAN VEHICLE DUMP BODY 2 Sheets-Sheet 2 FiledNov. 8, 1928 Patented Dec. 9, 1930 i* UNrr-ED srATEs RALPH T. osMAN, OrMANSFI'ELD, oHIo VEHICLE DUMP BODY Application filed November 8, 1928.Serial NO. 317,963.

This invention pertains to improvements in vehicle dump bodies and moreparticularly to the mechanism for effecting the dumping operation. V

Heretofore, various mechanical and electrical power deviceshave beenprovided for tiltng one endof a dump body to discharge the contents, andwhile Vthese have accomplished their purpose, in certain typesV ofstructures, they are in allinstances costly and complicated. j

The mechanical devices, in generahare operated by the engine, whichrequires special construction to provide the necessary drive andcontrols. rlhe electrical .devices are impractical when Vdrven OE thestorage battery due to the great amount of current required, and where amotor driven generator is provided, the costis prohibitive.

It is, therefore, the primary Object of the present inventionv toovercome the foregoing objections by'the provision of an exceedinglysimple, inexpensive, and eflicient electrically operated hoistingapparatus, which requires a minimum amount of current and can,therefore, be operated by the conventional* starting motor which causeslittle drain upon thebattery.

i Incidental to the foregoing7 it is an Object of the present inventionto provide a combination gravity dump body and electrically operatedtiltingmechanism whereby minimum power is required to either tilt orlower the body.

A more specific object is to improve the mounting between the V body andvehicie whereby thebody is held rigidly against lateral movement uponits tracks, regardless of wear, and. whereby the tracks areself-cleaningv to prevent the accumulation of material with resultingimpedance in the tilting operatiorn i i V A furtherv Object is toprovide a gravity dump bodywith means to retard its momentum during thetilting operation to prevent .overthrow and Vstrain. upon the actuatingmechanism and at the same'time to raise the discharge end of'the :bodyto vgive greater clearance over the vehicle. wheels when the same is indumping'. position.

'Vith the above and other objects in view, which wlll appear as thedescription proceeds, the invention resides in the novel construction,combination and arrangement of parts substantlally as herelnafterdescrlbed and more particularly defined by the appended claims, it beingunderstood that such changes in the precise embodiment of the hereindisclosed invention may be made as come within the scope of the clailns.

In the accompanying drawings isillustrated one complete example of thephysical embodiment of the present invention constructed according tothe best mode so far devised for the practical application of theprinciples thereof.

In' the drawings, Figure. 1 is a longitudinal section illustrating the'dump body and the actuating mechanism constructed in accordance with thepresent invention, the same being taken on the line 1-1 of Figure Figure2 ls a transverse section taken on Vthe line 2-2 of Figure 1;

Figure 3 isa plan section taken on the line 3, 3 of Figure 1; V

Figure, 4 is a detailed view illustrating the motor drive; and

Figure 5 is a detail of the motor' direetion control, the electriccircuit being shown diagrammatically. A s

Referring' now more particularly to the accompanying drawings, thenumeral 1 designates a conventional type of dump body mo'unted upon theusual transverse and longitudinal reenforc'ing sills 2. In accordancewith the foregoing objects, one of the essential features of the presentinvention resides in the provision of a dump body requiring littleeft'ort to actuate the same,'thus permit- Vting the use of a smallelectric motor requiring a minimum current to efiect-the tiltingoperation. T'o accomplish this7 it is proposed to use a gravity type ofdump body wherein the center of gravity of the bodyand its contents ispositioned closely adjacent the fulcrum point of the body. In thepresent instance, the body illustrated is of` the rockerjtypezandcomprises. the arcuate rockers 3 secured to the sills 2 of the pre eralywelded to4 the rockers along their arcuate edges.

Thefrockers 3 engage the ,gtracksf carried upon suitable cross members 6securedzto the longitudnal vehicle-,frame members 7.

` VAskbest llustrated in'Figure '2, both the i rockers`3and the tracksare formed ofV angle iron, the corners of the track lirons serving as anapeX to engage the lnner angles V of the rockers 3. Thus, it will bereadily s'eenthat the rockers will adjustthemselves,

to the tracks regardless of any clearance re;

Vsulting in manufacture or through wear.` It* will: also^be appreciated'that' the present structure of' track is self-cleaning, as Vthe rockersWill 'readily force any material from z the sides, thus Vpr'eventing theaccumulation of dirt or material on the track, which is aV commonoccurrence in instances. where flat tracks are employed a As'best shownIn Figure i yinclined u wardl towards their rear ends',

. ingthe momentum to be retarded, whichrei lieves Strain upon Vtheactuating mechanism Thus-ast e'bo y is tiltedrearwardly on itsvroekersand the center'ofgra'vityv moves rearwardly,l Vthe entire body willVrise, fcausandprevents tendencyj' of the body to'overethrow; The links 8pivoted at-theirlower ``vendstothe longitudinalfram'e members 7,

and at their upper' ends Vto the track carryingV plates '4, serve toprevent longitudinal shift-` Ving of the body onithe tracks.

From the foregoing, it willbe quite obvi- Vous'that Vthe type of Vdumpbody employed .can be'so designed as to require a minimum l amount ofpower to effect the tiltingoperation. VFor this purpose, a conventionaltype of engine starting motor 9 is provided, Vthe same beingV mounted inanysuitablefmanner upon an auxiliary framework 10 carried by crossmembers 11 secured to the longitudinal vehicle'framemembers 7. Currentmay be supplied to the motor V9 through the'usual vstorage battery B ofthe motor vehicleupon [which the b'odyis mounted, while acontrol Av'avivitch S, positionedin any convenient place for vtheoperator,controls the motor circuit C.

Forthe purpose of controlling the direction of drive ofthe motor `'9,a-plate 12, which carries the brushes 1.3, is pivotally mounted 'upononeend of themotor. VAsthe plate 12v is oscillated. vin' a mannerhereinafter de-l scribed, the brushesare shifted to reverse i thedirection of current in the arma'ture in i theconventional manner.

1 The motor shaft 14: Vis provided with a worm 15V whichengagesthe wormwheel 16 mounted Von the transverse shaft 17, carried -byithe auxiliaryframes 10,l as indicated in dotted *lines in'Figure fThe motor wormVdrive'mayV be enclosed ina suitable casin'g the tracks 5 are which isnot shown in Vthe drawings for the pu'pose of Vsimplif ing theillustration.

V hrough a suita le gear trainl17' power is trans'xnitted to the Vsector18`V mounted on the transverse shaift 19;V also carried by thelauxiliary frames 10. Secured to thesectorV 18'is5an arm19'\-whichcarries a: roller 20 o' engagingl a 'channel track 21 secured'to the 1bottom of the body 1,V longitudinallyand o centrally Vof the. same. V'Thus, as movement is transmit'te'd to the sector 18,V the arm 19' willbe caused to rock upwardly, raising the rear end of the body andcausingthe same to ,rock upon :the tracks 5. Obviously, very littlepower is required for this operation,

and this fisfurther` minimizedby the red uction geari'ng between the'motor and the sector. It Will also be' seen thatV as the body is tilted,the same maybe stopped and held in rany' position by 'merely opening the'switch S; as the worm drive between the'm'otor and the shaft 17 ispracticallylinterlocking.

fIn order' to prevent'overthrowjof the body, through? inadvertenceof theoperator, tiisV 'proposedf-to provide-*automatic means 'for Controllingthe reversing of the motor at the limit of the tilting operation.Vv`While this maybe aocomplished in' various ways,V one 'simple form isdisclosed,wherein a pin 22v carried Eby the sector 18 engages in a slot23 provided in 'the lever'f24.V Set screws 25,`

positioned at opposite ends of the slot V23 f serve to regul'ate theactuation Vof Vtheflever 24 as the sector is rotated, and the pin522travels'back andV forth' in the'slot; L

The'opposite' end'of'the 1ever 24 is'con-V lnected'toa'bell crank 26which in turn is connected with the oscillating plate' 12a V throughthe-link 27. 1 Thu's, as .the Vsector is` oscillated', thepin 22 is freetoV travel in the slot 23wdurin" ,its intermediate m'ovement,V

vided, which requires* a minimum amount of currentV and can, therefore,'be ,repeatedly actu'ated without prohibitive drain upon theconventional battery of the motor vehicle.j

invention 'may be designed' as a' separate unit 4andapplied to Vanyconventional type of ve-i hicle without altering 'its construction andwill quite'apparentin' thatthe same may be easily controlledbythe'manip'ul'ation of It willalsobe appreciated that the present provide*auxiliary drlvingconnections with jthe Vmotorvehlcle engine.Furthermore, the

vadvz'lnt'age of an electrically" operated hoist V V a simple switchwithin convenientreach of the vehicledriven a a Another materialadvantage of the 'present Struotue resdes in the mountng of the Vbodyupon thevehcle frame Whereby the same is held rgdly against lateralshftng, regardless of clearance between the tracks and rockers, and inWhich undue jars and stan upon the actuatng Inechansm is avoded, anddesred Olealfance is Obtaned as the body is rased during tltng.

I clam:

A device of the class descrbed comprsng a ulcl'umed body, a vehcleframe, inverted V-shaped inclined tracks carred by said frame and acuatenverted V-shaped l'ockers carried by said body and engagng said tracksto mount saidbody upon the frame foltiltillg movement.

In testimony that I clam the foregong I have hereunto set my hand atMansfield, in the County of Rchland and State of Oho.

RALPH T. OSMAN.

